ISW (integrated Sachs-Wolfe) effect via dark energy models quintessence and ACDM

• Grant number: 11/51794-1
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2012
• End date: January 31, 2013
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Maria Cristina Batoni Abdalla Ribeiro
• Grantee: Maria Cristina Batoni Abdalla Ribeiro
• Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil

Abstract

The physics of particles and fields crosses path with the physics of cosmological models. The common interest is to understand mechanisms that explain, in particular, the accelerated expansion of the universe. In this sense we present a project that addresses concepts of both areas and aims to calculate the impact of measures of the ISW (Integrated Sachs-Wolfe) effect in different cosmologies of ACDM. In principle there are several non-ACDM cosmologies where the cosmological distances can be very similar to distances in the ACDM model, however they may have very different mesure of growth structure from the ACDM cosmology. Thus we propose to calculate the growth structure in such cosmologies and predict the magnitude of the cross-correlation between CMB and the galaxies in the. local universe and compare these predictions with measurements of the ISW effect. (AU)